Thunder Gold Phase Three Drill Results Demonstrate Broad, Consistent Mineralization at Tower Mountain

On December 8, 2025, Thunder Gold Corp. announced the complete results from its 12-hole, 2,164-metre Phase Three drill program at the Tower Mountain Gold Property. The results demonstrated broad, consistent gold mineralization, reinforcing the company's large-tonnage, open-pittable model.

Key intercepts include: - TM25-180: 333.0 metres of 0.47 g/t Au, including a higher-grade zone of 1.83 g/t Au over 18.0 metres. - TM25-188: 271.5 metres of 0.42 g/t Au. - TM25-181: 181.5 metres of 0.53 g/t Au. - TM25-186: 25.5 metres of 1.05 g/t Au.

The company noted its all-in drilling cost was less than C$300 per metre. These results will be incorporated into the upcoming NI 43-101 Mineral Resource Estimate (MRE) being prepared by Micon International Ltd., which is expected in January 2026.

The news is materially positive as it represents the successful completion of a key de-risking step ahead of the company's first-ever Mineral Resource Estimate. The results align with and confirm the company's exploration strategy, which has been clearly communicated throughout the year.

• Progression and Execution:

  • Jan 2025: Initial discovery on the eastern "P-Target" showed potential for mineralization outside the historically drilled western contact.
  • Sept 2025: Excellent Phase Two results (e.g., TM25-178: 103.5m @ 1.25 g/t Au) provided strong validation for expanding the "3738 Target".
  • Sept 2025: The company laid out a clear plan for Phase Three: a fully funded 2,000-metre program to conduct infill drilling and deepen key holes (TM25-180 and TM25-181) to build geological confidence for an MRE.
  • Oct 2025: The company formally engaged Micon International to complete the MRE, setting a clear timeline and catalyst for January 2026.

• Meeting Expectations: The Dec 8th results delivered on the September plan. The program was slightly expanded to 2,164 metres, and the reported long intercepts, while low-grade, are precisely what is needed to support a large-tonnage, bulk-mineable resource model. The successful deepening of hole TM25-180 to 333.0 metres confirms vertical continuity, a critical factor for an open-pit scenario.

• Impact on Valuation: While not containing "bonanza" grades, these results provide the final, crucial dataset for the MRE. The market has been anticipating this confirmation. The results solidify the geological thesis, reduce the risk associated with the upcoming MRE, and demonstrate management's ability to execute its stated plan on budget. The stock's reaction will likely be tempered until the MRE is released, but this news provides a solid foundation and reduces the likelihood of a negative surprise in the resource calculation. The results are a necessary step, and they were positive.

Thunder Gold Corp. is a Canadian junior mineral exploration company focused on its 100%-owned flagship asset, the Tower Mountain Gold Property. The project is located approximately 50 km west of Thunder Bay, Ontario, with excellent access and infrastructure, including proximity to the Trans-Canada Highway. The company's strategy is to define a large-tonnage, low-grade, open-pittable gold deposit. The property surrounds a large intrusive complex, and mineralization is characterized by broad zones of low-grade gold. The company has a conceptual exploration target along the western contact of the intrusive of 40 to 80 million tonnes averaging 0.80 to 1.20 g/t Au, which it aims to validate with its maiden resource estimate. The property has minimal royalties, with only a small NSR on claims staked by the company within a specific area of interest.